In message <caokdy5chx5cvb8u1wt6vfbkmydurwp7z4pkz_jg6o5li4pa...@mail.gmail.com>
Michael Ossipoff <[email protected]> wrote:
> I like the pond suggestion, It hadn't occurred to me, and I hadn't heard it
> before.
>
> Michael Ossipoff
> 40 F
> September 27th
> 1101 UTC
Just like yourself, I never thought of using a surrounding water-
barrier to protect any sundial from vandalism - but I tend to
agree with the people who see that an interactive Analemmatic is
probably best, and is almost intuitive how it works (so no great
explanation, apart from "stand on today's date" is necessary).
However, I would like to have some further information on the
"bi-filar" sundial mentioned by Linda Reid - as I am intrigued
that the time is indicated by the INTERSECTION of shadows cast
by two horizontal gnomons. I have never seen this type of dial,
so I would be grateful if anybody can send a diagram (or even a
photograph) of one to this Mailing List - plus if it is 'equi-
angular', I can see that it will be much easier to manufacture.
I assume the two horizontal gnomons have to be 'adjustable' in
some way, if the dial has to deal with Latitude variations - and
with Longitude/EoT being dealt with, by rotating its Hour-ring?
Regards,
David Andersson.
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